clang  10.0.0svn
Classes | Namespaces | Functions | Variables
CFG.cpp File Reference
#include "clang/Analysis/CFG.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Attr.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclBase.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclGroup.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ExprCXX.h"
#include "clang/AST/OperationKinds.h"
#include "clang/AST/PrettyPrinter.h"
#include "clang/AST/Stmt.h"
#include "clang/AST/StmtCXX.h"
#include "clang/AST/StmtObjC.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/AST/Type.h"
#include "clang/Analysis/ConstructionContext.h"
#include "clang/Analysis/Support/BumpVector.h"
#include "clang/Basic/Builtins.h"
#include "clang/Basic/ExceptionSpecificationType.h"
#include "clang/Basic/JsonSupport.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/Specifiers.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/DOTGraphTraits.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/GraphWriter.h"
#include "llvm/Support/SaveAndRestore.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
#include <memory>
#include <string>
#include <tuple>
#include <utility>
#include <vector>
Include dependency graph for CFG.cpp:

Go to the source code of this file.

Classes

struct  llvm::DOTGraphTraits< const CFG * >
 

Namespaces

 llvm
 Specialize PointerLikeTypeTraits to allow LazyGenerationalUpdatePtr to be placed into a PointerUnion.
 

Functions

static SourceLocation GetEndLoc (Decl *D)
 
static bool IsIntegerLiteralConstantExpr (const Expr *E)
 Returns true on constant values based around a single IntegerLiteral. More...
 
static const ExprtryTransformToIntOrEnumConstant (const Expr *E)
 Helper for tryNormalizeBinaryOperator. More...
 
static std::tuple< const Expr *, BinaryOperatorKind, const Expr * > tryNormalizeBinaryOperator (const BinaryOperator *B)
 Tries to interpret a binary operator into Expr Op NumExpr form, if NumExpr is an integer literal or an enum constant. More...
 
static bool areExprTypesCompatible (const Expr *E1, const Expr *E2)
 For an expression x == Foo && x == Bar, this determines whether the Foo and Bar are either of the same enumeration type, or both integer literals. More...
 
static TryResult bothKnownTrue (TryResult R1, TryResult R2)
 
static const VariableArrayTypeFindVA (const Type *t)
 
static QualType getReferenceInitTemporaryType (const Expr *Init, bool *FoundMTE=nullptr)
 Retrieve the type of the temporary object whose lifetime was extended by a local reference with the given initializer. More...
 
static bool CanThrow (Expr *E, ASTContext &Ctx)
 
static bool shouldAddCase (bool &switchExclusivelyCovered, const Expr::EvalResult *switchCond, const CaseStmt *CS, ASTContext &Ctx)
 
static void print_initializer (raw_ostream &OS, StmtPrinterHelper &Helper, const CXXCtorInitializer *I)
 
static void print_construction_context (raw_ostream &OS, StmtPrinterHelper &Helper, const ConstructionContext *CC)
 
static void print_elem (raw_ostream &OS, StmtPrinterHelper &Helper, const CFGElement &E)
 
static void print_block (raw_ostream &OS, const CFG *cfg, const CFGBlock &B, StmtPrinterHelper &Helper, bool print_edges, bool ShowColors)
 
static bool isImmediateSinkBlock (const CFGBlock *Blk)
 

Variables

static StmtPrinterHelper * GraphHelper
 

Function Documentation

◆ areExprTypesCompatible()

static bool areExprTypesCompatible ( const Expr E1,
const Expr E2 
)
static

For an expression x == Foo && x == Bar, this determines whether the Foo and Bar are either of the same enumeration type, or both integer literals.

It's an error to pass this arguments that are not either IntegerLiterals or DeclRefExprs (that have decls of type EnumConstantDecl)

Definition at line 144 of file CFG.cpp.

References clang::ast_matchers::stmt.

◆ bothKnownTrue()

static TryResult bothKnownTrue ( TryResult  R1,
TryResult  R2 
)
static

Definition at line 405 of file CFG.cpp.

References clang::children().

◆ CanThrow()

static bool CanThrow ( Expr E,
ASTContext Ctx 
)
static

◆ FindVA()

static const VariableArrayType* FindVA ( const Type t)
static

◆ GetEndLoc()

static SourceLocation GetEndLoc ( Decl D)
static

Definition at line 66 of file CFG.cpp.

References clang::Decl::getLocation().

◆ getReferenceInitTemporaryType()

static QualType getReferenceInitTemporaryType ( const Expr Init,
bool FoundMTE = nullptr 
)
static

Retrieve the type of the temporary object whose lifetime was extended by a local reference with the given initializer.

Definition at line 1653 of file CFG.cpp.

References clang::Expr::getType(), clang::Expr::IgnoreParens(), clang::Type::isReferenceType(), P, and clang::Expr::skipRValueSubobjectAdjustments().

Referenced by clang::CFGImplicitDtor::getDestructorDecl(), and print_elem().

◆ isImmediateSinkBlock()

static bool isImmediateSinkBlock ( const CFGBlock Blk)
static

◆ IsIntegerLiteralConstantExpr()

static bool IsIntegerLiteralConstantExpr ( const Expr E)
static

Returns true on constant values based around a single IntegerLiteral.

Allow for use of parentheses, integer casts, and negative signs.

Definition at line 75 of file CFG.cpp.

References clang::Expr::IgnoreParens().

Referenced by tryTransformToIntOrEnumConstant().

◆ print_block()

static void print_block ( raw_ostream &  OS,
const CFG cfg,
const CFGBlock B,
StmtPrinterHelper &  Helper,
bool  print_edges,
bool  ShowColors 
)
static

◆ print_construction_context()

static void print_construction_context ( raw_ostream &  OS,
StmtPrinterHelper &  Helper,
const ConstructionContext CC 
)
static

◆ print_elem()

static void print_elem ( raw_ostream &  OS,
StmtPrinterHelper &  Helper,
const CFGElement E 
)
static

◆ print_initializer()

static void print_initializer ( raw_ostream &  OS,
StmtPrinterHelper &  Helper,
const CXXCtorInitializer I 
)
static

◆ shouldAddCase()

static bool shouldAddCase ( bool switchExclusivelyCovered,
const Expr::EvalResult switchCond,
const CaseStmt CS,
ASTContext Ctx 
)
static

◆ tryNormalizeBinaryOperator()

static std::tuple<const Expr *, BinaryOperatorKind, const Expr *> tryNormalizeBinaryOperator ( const BinaryOperator B)
static

Tries to interpret a binary operator into Expr Op NumExpr form, if NumExpr is an integer literal or an enum constant.

If this fails, at least one of the returned DeclRefExpr or Expr will be null.

Definition at line 114 of file CFG.cpp.

References clang::BinaryOperator::getLHS(), clang::BinaryOperator::getOpcode(), clang::BinaryOperator::getRHS(), and tryTransformToIntOrEnumConstant().

◆ tryTransformToIntOrEnumConstant()

static const Expr* tryTransformToIntOrEnumConstant ( const Expr E)
static

Helper for tryNormalizeBinaryOperator.

Attempts to extract an IntegerLiteral constant expression or EnumConstantDecl from the given Expr. If it fails, returns nullptr.

Definition at line 99 of file CFG.cpp.

References clang::Expr::IgnoreParenImpCasts(), clang::Expr::IgnoreParens(), and IsIntegerLiteralConstantExpr().

Referenced by tryNormalizeBinaryOperator().

Variable Documentation

◆ GraphHelper

StmtPrinterHelper* GraphHelper
static

Definition at line 5925 of file CFG.cpp.